package ouyangye;

public class test {
    public static void main(String[] args) {

        shape circle= new circle("圆",5);
        circle.display();

        shape rectangle=new rectangle("矩形",2,3);
        rectangle.display();

        shape triangle=new triangle("三角形",3,4,5);
        triangle.display();

        shape square=new square("正方形",4);
        square.display();
    }
}
